摘要:
The present invention provides 2,6-dinitrogen-containing substituted purine compounds of formula (A) or salts or solvates thereof or the solvates of salts thereof, as well as pharmaceutical compositions containing such compounds. The compounds of the present invention have the characteristics of lower toxicity, broad anticancer spectrum, higher anticancer activity, good stability and the like. The compounds are useful for the manufacture of an antitumor medicament. The present invention also provides a process for preparing these compounds.
摘要:
The present invention provides 2,6-dinitrogen-containing substituted purine compounds of formula (A) or salts or solvates thereof or the solvates of salts thereof, as well as pharmaceutical compositions containing such compounds. The compounds of the present invention have the characteristics of lower toxicity, broad anticancer spectrum, higher anticancer activity, good stability and the like. The compounds are useful for the manufacture of an antitumor medicament. The present invention also provides a process for preparing these compounds.
摘要:
The present invention relates to a crystalline form of entecavir and its process for preparation, and provides a pharmaceutical composition comprising a therapeutically effective amount of the crystalline form of entecavir. Furthermore, the present invention also provides a use of the crystalline form of entecavir in preparation for a medicament for the treatment of hepatitis B viral infections. The present invention is beneficial toe preparations for pharmaceutical formulations and enhancements of its bioavailability.